Hadit (sometimes Had) refers to the Thelemic version of an Egyptian god. Hadit is the principal speaker of the second chapter of The Book of the Law (written by Aleister Crowley in 1904).
Hadit, "the great god, the lord of the sky," is depicted on the Stele of Revealing in the form of the winged disk of the Sun. However, while the ancient Egyptians treated the Sun and the other stars as separate, Thelema connects the sun-god Hadit with every individual star. Furthermore, The Book of the Law says, "Every man and every woman is a star." Book of the Law 1,3
Hadit is the Secret Seed. In the Book of the Law he says; "I am alone: there is no God where I am." Book of the Law II,23. He is "the flame that burns in every heart of man, and in the core of every star." Book of the Law II,6. He is identified with kundalini; in the Book of the Law he says, "I am the Secret Serpent coiled about to spring: in my coiling there is joy. If I lift up my head, I and my Nuit are one. If I droop down mine head, and shoot forth venom, then is rapture of the earth, and I and the earth are one. There is great danger in me..." Book of the Law II,26-27.
Hadit is the Fire of Desire at the Heart of Matter (Nuit). The combination of the upward-pointing triangle of Hadit and the downward-pointing triangle of Nuit forms the Star of Spirit (the Hexagram). The union of the infinitely small Hadit and the infinitely great Nuit causes an explosive rapture which leads to Samadhi.
His symbols are our Sun, the serpent, the Fire Snake, the star Sothis, the planet Pluto, sperm, the Will, the winged globe, the Hermit, and the hidden flame. He is Leo to Nuit's Aquarius. He is LVX to Nuit's NOX. The short form of his name, Had, forms the central syllable of the word of the Aeon, Abrahadabra.